Synergistic extraction system for co-extraction of nickel and cobalt and co-extraction method of co-extraction system

A nickel-cobalt co-extraction and system technology, applied in the field of metal ion extraction system, can solve the problems of high-efficiency separation of difficult-to-interference metal ions, high-efficiency stripping of nickel-cobalt, etc.

Pending Publication Date: 2022-04-12
CHONGQING KOOPPER CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a co-extraction system for co-extraction of nickel and cobalt to solve the problem that the co-extraction system in the prior art is difficult

Method used

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  • Synergistic extraction system for co-extraction of nickel and cobalt and co-extraction method of co-extraction system
  • Synergistic extraction system for co-extraction of nickel and cobalt and co-extraction method of co-extraction system
  • Synergistic extraction system for co-extraction of nickel and cobalt and co-extraction method of co-extraction system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The extraction and stripping in this embodiment were carried out at a temperature of 25°C.

[0052] Composition of water phase simulated feed liquid (to-be-treated liquid): cobalt: 1.05g / l, nickel: 2.93g / L, zinc: 0.33, g / L, manganese: 3.18g / L, magnesium: 12.02g / L, calcium: 1.69g / L, the pH value of the feed liquid is 2.51.

[0053] The initial organic phase composition: with hydrogenated kerosene as diluent, the concentration of neodecanoic acid in the organic phase is 0.5mol / L, the concentration of 4-hydroxy-6-ethyl-decane-5-oxime is 0.35mol / L, N , the concentration of N-didecyldecylamine is 0.4mol / L.

[0054] (1) Zinc extraction and stripping

[0055] Mix the above initial organic phase with the simulated feed liquid (liquid to be treated) at O / A=1:1 (10:1.0-1.0:10 can be selected according to the actual situation) at room temperature at 25°C for 5 minutes (it can be adjusted according to the actual situation Select 0.5-10 minutes), control the equilibrium pH value ...

Embodiment 2

[0066] The extraction and stripping in this embodiment were carried out at a temperature of 30°C. The composition of the simulated water phase liquid is consistent with that of Example 1.

[0067] The initial organic phase composition: with hydrogenated kerosene as diluent, the content of naphthenic acid (hexahydrobenzoic acid) in the initial organic phase is 0.45mol / L, 5-diethyl-7-hydroxyl-6-dodecyl oxime The content is 0.32mol / L, and the content of trioctylamine is 0.35mol / L.

[0068] (1) Zinc extraction and stripping

[0069] The experimental procedure was the same as in Example 1, and the results shown in Table 3 were obtained.

[0070] Table 3: The effect of the co-extraction system "naphthenic acid + 5-hydroxy-7-ethyl-undecane-6-oxime + trioctylamine" on the separation of zinc and nickel and cobalt

[0071] metal element cobalt nickel zinc manganese magnesium calcium Extraction rate (%) 0.92 3. 92.86 0.0 0.0 0.0 Stripping rate (%)...

Embodiment 3

[0080] The extraction and stripping in this example were carried out at a temperature of 10°C. The composition of the simulated water phase liquid is consistent with that of Example 1.

[0081] Initial organic phase composition: with hydrogenated kerosene as diluent, the content of naphthenic acid (hexahydrobenzoic acid) in the initial organic phase is 0.52mol / L, and the content of 5-hydroxyl-7-ethyl-undecane-6-oxime is 0.37mol / L, the content of methyl tributyl ammonium bromide is 0.50mol / L.

[0082] (1) Zinc extraction and stripping

[0083] The experimental procedure was consistent with that of Example 1, and the results shown in Table 5 were obtained.

[0084] Table 5. The effect of the co-extraction system "naphthenic acid + 5-hydroxy-7-ethyl-undecane-6-oxime + methyltributylammonium bromide" on the separation of zinc and nickel-cobalt

[0085] metal element cobalt nickel zinc manganese magnesium calcium Extraction rate (%) 1.02 3.59 91.25 ...

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Abstract

The invention relates to the technical field of metal ion extraction systems and methods, in particular to a co-extraction system for co-extraction of nickel and cobalt and a co-extraction method of the co-extraction system. The co-extraction system for nickel-cobalt co-extraction comprises alkyl hydroxyl oxime, carboxylic acid and a modified extraction agent according to a molar ratio of (1.0-2.0): (1.0-3.0): (1.0-3.0), and the structural formula of the modified extraction agent is shown as a formula (1) or a formula (2). According to the scheme, the technical problem that a co-extraction system in the prior art is difficult to realize high-efficiency separation of nickel and cobalt from other interfering metal ions and high-efficiency reverse extraction of co-extracted nickel and cobalt at the same time can be solved. The co-extraction system not only can realize efficient separation of nickel and cobalt from zinc, manganese, magnesium and calcium, but also can enable co-extracted nickel and cobalt to be smoothly reversely extracted at room temperature, so that the extraction separation process is simplified, carbon emission is reduced, the operation cost is reduced, and the co-extraction system has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of metal ion extraction systems and methods, in particular to a co-extraction system for co-extraction of nickel and cobalt and a co-extraction method thereof. Background technique [0002] With the country's stricter carbon emission requirements and the continuous development of the new energy industry, the market demand for nickel-cobalt metal is increasingly strong, especially in electric vehicles, alloy materials, catalyst materials, etc. particularly prominent. As nickel and cobalt are important strategic resources, how to separate and purify nickel and cobalt has become a hot research topic in the industry in recent years. The methods for separating and extracting nickel and cobalt from materials containing nickel and cobalt mainly include pyrometallurgy, chemical precipitation and solvent extraction. Pyrometallurgy has high energy consumption, heavy pollution and high cost. The purity of the produc...

Claims

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Application Information

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IPC IPC(8): C22B3/40C22B23/00C22B19/20
CPCY02P10/20
Inventor 徐志刚邹潜王永茜杨帆王朝华汤启明汪世川杨正淑
Owner CHONGQING KOOPPER CHEM IND
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